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[[Image:Cement Plant.jpg|thumb|Cement Plant.]]
'''Cement''' is a substance that can bind other materials together. It is made by heating limestone with clay and plaster ([[calcium]], [[silicon]], [[iron]], and [[aluminum]]) and in some cases Pozzolanic ash.
<blockquote>
''The Assyrians and Babylonians used clay for this purpose, and the Egyptians advanced to the discovery of lime and gypsum mortar as a binding agent for building such structures as the Pyramids.
The Greeks made further improvements and finally the Romans developed a cement that produced structures of remarkable durability.'' [http://www.rumford.com/articlemortar.html A History of Cement]
</blockquote>
In 1824 the English mason Joseph Aspdin registered a patent on a cement that he called Portland Cement.
{{Clear}}
== See also ==
*[[Sedimentary rock]]
*[[Asphalt]]
*[[Limestone]]
== External links ==
*[http://www.britannica.com/EBchecked/topic/473488/pozzolana Pozzolana]
[[Category:Architecture]]
'''Cement''' is a substance that can bind other materials together. It is made by heating limestone with clay and plaster ([[calcium]], [[silicon]], [[iron]], and [[aluminum]]) and in some cases Pozzolanic ash.
<blockquote>
''The Assyrians and Babylonians used clay for this purpose, and the Egyptians advanced to the discovery of lime and gypsum mortar as a binding agent for building such structures as the Pyramids.
The Greeks made further improvements and finally the Romans developed a cement that produced structures of remarkable durability.'' [http://www.rumford.com/articlemortar.html A History of Cement]
</blockquote>
In 1824 the English mason Joseph Aspdin registered a patent on a cement that he called Portland Cement.
{{Clear}}
== See also ==
*[[Sedimentary rock]]
*[[Asphalt]]
*[[Limestone]]
== External links ==
*[http://www.britannica.com/EBchecked/topic/473488/pozzolana Pozzolana]
[[Category:Architecture]]